Luminous Landscape Forum

Raw & Post Processing, Printing => Adobe Camera Raw Q&A => Topic started by: stamper on November 05, 2011, 06:51:25 am

Title: ACR Lens distortion
Post by: stamper on November 05, 2011, 06:51:25 am

I have noticed recently when I set the exposure using the exposure slider to reduce the red clipping to just disappear - in an overexposed raw file - and then set the lens distortion setting to the profile suggested by Adobe then the clipping area reappears. Why should the profile affect the exposure of the raw file?

Title: Re: ACR Lens distortion
Post by: stamper on November 05, 2011, 07:19:20 am

I have just realised that there is a vignetting lightening process in the lens correction that is altering not only the dark areas but also the highlights?

Title: Re: ACR Lens distortion
Post by: ErikKaffehr on December 26, 2011, 02:25:36 am

Hi!

Vignetting corrects light fall of at the edges and corners. It functions as an increase of exposure. So it's affects exposure.

Best regards
Erik

Quote from: stamper on November 05, 2011, 07:19:20 am

I have just realised that there is a vignetting lightening process in the lens correction that is altering not only the dark areas but also the highlights?